Nut for bolts or the like.



INVENTOR W i H. P. KRAFT.-

NUT FOR BOLTS OR THE LIKE.

APPLICATION HLED JULY25. I914.v

Patented Oct. 8, 1918.

LLE7

WITNESSES:

By Altorue ys,

are.

HENRY P. KRAFT, OF RIDG-EWOOD, NEW JERSEY.

nu'r ron BOLTS on THE LIKE.

Specification of Letters Patent.

Patented Got. 8, 1918.

Application filed July 25, 1914. Serial No. 853,129.

To all whom it may concern:

Be it known that I, HENRY P. KRAFT, a

citizen of the United States of America, re-

siding in Ridgewood, in the .county of Bergen and State of New Jersey,have invented certain new and useful Improvements in Nuts for Bolts orthe like, of which the following is a specification.

This invention relates to nuts for bolts or the like, and aims toprovide certain improvements therein.

'The invention is applicable to nuts of any description, although in thepreferred form illustrated it is particularly adapted for nuts for usein connection with dust caps for pneumatic tire valves.

' Nuts for use on pneumatic tire valves are usually provided with a bodyportion having a recess for receiving a packing washer and an interiorthread adapted to engage the screw-thread on the valve shell. Whenadapted to receive a cap, a screw-threaded extension is usually formedon the nut. By reason of the depth of the nut it is expensive to form itout of a solid bar of metal, and this is particularly true when anextension is provided which increases the length'of the nut. Accordingto the pres ent invention there is provided a nut formed of sheet metal,which nut is provided with a recess adapted to receive a packing washer.According to the present invention there is rovided a nut formed ofsheet metal wh1ch has a body portion and a cylindrical portion, thecylindrical portion being preferably of smaller diameter than the bodyportion whereby there is formed a recess adapted to receive a packingwasher. If thin metal is used and"a cylindrical portion is providedwithinner and outer threads, this would undesirably weaken thestructure. To avoid this, where two threads are required, the nut isformed with two thicknesses of material at its screw-threaded parts.Such nuts are provided with a wrench face in the form of flats, knurls,or the like, and when this vwrench face is sufficiently broad to becomeeflicient, the recess in the nut becomes so dee that the leather orother washers of ordlnary thickness are not deep enough to extend beyondthe lower face of the nut. According to the present invention I providea nut having a filling piece preferably formed of sheet metal whichforms a rest or seat for the washer, and lengthens it so that its faceextends beyond the lower face of the nut, so that it may be effectivelyused. Certain other features of improvement are also provided.

Referring to "the drawings which illustrate several forms of theinvention,

Figure 1 is a side elevatlon of one form of nut applied to a dust capfor tire valves.

Fig. 2 is a diametrical section of the nut.

Fig. 3 is a top view.

Fig. 4 is an elevation of the filler.

Fig. 5 is a top view of the filler.

Fig. 6 is a View partly in elevation and partly in section, illustratingthe use of a solid filler.

Fig. 7 is an under plan view of Fig. 6.

Fig. 8 1s a diametrical section of a modified form of nut.

Fig. 9 is a diametrical section of a further modification.

Fig. 10 is a diametrical section of a further modification.

Referring to the drawings, let A indicate the nut as a whole which ispreferably formed with a body portion B which may be of hexagonal formas shown in Figs. 1 and 2, or of round form as shown in Fig. 6, or anyother suitable shape. The nut is in the construction shown no Figs. 1 to6 formed with an extension or neck C of smaller diameter than the bodyportion, which as shown is screw-threaded on its interior at D to engagea bolt, Valve shell or other screw-threaded part. When the nut isdesigned to be used in connection with a valve cap, such as is shown atE, it is provided with an exterior screw-thread F upon which the valvecap screws.

The body portion B is adapted to bear either directly or indirectlyagainst a wheel felly or rim or some. other part, and by reason of itscup formation is extremely stiif and rigid. It hence does not requiremetal of any considerable thickness in order to, adequately sustain thestrains in use. Ifthe parallel with the exterior of the extension,

as best shown in Fig. 2.

It is desirable in some instances to provide a packing ring or washer Gfor the nut, and this may be formed of a suitable thickness of leatheror rubber, or other material. If the body portion B is designed to havea considerable depth in order that it may be engaged by a wrench, or inorder that a secure finger-hold may be obtained, as in Fig. 6, it is'found that the recess .thus formed in the body portion when metal ofsuitable thinness is used is deeper than the thickness of a leather orother usual washer,

so that the washer fails to project beyond the face of the nut. Underthese circumstances it is desirable to provide a filling piece H.According to the present invention this is best formed of sheet metal,and best comprises an annular member with an inner flange I and an outerflange J which rest upon the portion K of the nut. Thepacking washer Gin turn rests upon the filler. Preferably in the case of a hexagonal nutthe outer edge of the filler is similarly formed as shown in Figs. 4 and5 while its iner edge or opening is preferably round. In eitherhexagonal or other nuts, however,

it is usually. desirable to form the packing 4 ing washer G of circularshape as best seen in Fig. 3, since this shape is less liable to becomedistorted when'the nut is screwed In forming the improved nut itis-preferable' to start with a flat piece of metal which is graduallycupped to form the extension, and the bottom of the cup is pressed in acontrary direction by a series of operations until it projects inwardlysuflicien-tly to form the inturned portionof the extension. At asuitable point in the operation the bottom of the cup is perforated inorder to assist the formation. By preference the extension ispractically completed before the circular flange is drawn into hexagonalor round form. The, filler H is formed with a comparatively loose fitand after it has been adjusted in place, it may be given an inward blowwith a punch or hammer, thus expandit sufiiciently to tightly grip theinterior wall of the body of the nut. No other .method of connection isusually necessary.

The packing washer G contacting at several points around the interiorperiphery of the body of the nut is held in place by friction withsufficient firmness.

In Figs. 6 and 7 is illustrated a nut having around body portion B whichis preferably knurled in order to provide a finger grip or wrench faces.In this construction a solid filling piece H is provided, while thepacking washer G may be circular as before.

In Fig. 8 is illustrated a form. of nut in which the extension 0 isformed within the of the latter being in this case continued downwardlyto form thesleeve D In this construction the parts may be connected bysolder or the like, or the parts may be jammed together tightly underpressure. If the nut body is of hexagonal or other noncircular outlineand the filling piece is of similar outline, the parts will beadequately secured against relative rotary motion. The

filling piece may be given a blow. in the same manner as described withreference to Fig.

'2, so as to swage it down slightly, thus causing it to grip theinterior of the body portion.

In Fig. 10 the body portion 13 is not formed integrally with thescrew-threaded extension, but the latter, indicated by the referenceletter C, is formed on the filling piece H by forming a sleeve on theflange I which is turned outwardly in this case instead of inwardly asin Fig. 2. In this construction it is preferable to make the outerthickness of metal as short as possible.

In either of the constructions shown the filling piece may be broughtout to'the edge of the body portion or may extend beyond the same ifdesired, or may be omitted entirely. I

While several embodiments of the invention have been "shown anddescribed, it is understood that the invention is not limited to suchcon'structions, but within the scope of the appended claims is capableof various changes and modi-fications I do not; herein specificallyclaimthe structure herein described with reference to Fig. 8; that is tosay, a sheet metal nut wherein the extension or neck is formed withinthe bodyportion, being threaded on either or both sides; and such nuthaving an annular recess which receives a filling piece and packingwasher, or either alone; suchstructure being claimed in my divisionalapplication for patent filed April 22, 1918, SerialNo. 229,899.

What I claim is 1.'A nut formed of sheet metal and having a body portionand an exteriorly screwthreaded extension, said nut having an openingcompletely through it, and having a cut interior thread adapted toengage a bolt or the like.

2. A nut. formed of sheet metal and having a body portion and anexteriorly screwthreaded extension, said nut having an openingcompletely through it, and having a cut interior thread adapted toengage a bolt or the like, and said extension projecting beyond saidbody portion. 1

3. A nut formed of sheet metal and having a body portion and anextension, said nut having an opening Completely through it, and saidextension bein screw-threaded on its interior and exterlor, the openingthrough the nut being at least as large as the diameter of the interiorthreaded bore.

4. A nut formed of sheet metal and having a portion thereof of metalfolded to form a double thickness, said portion being screw-threaded onits exterior.

5. A nut formed of sheet metal and having an extension folded to form adouble thickness of metal, said extension being screw-threaded on itsexterior.

6. A nut formed of sheet metal and having a body portion having wrenchfaces and said nut having an extension folded to form a double thicknessof metal, said extension being screw-threaded on its interior.

7. A nut formed of sheet metal and having a body portion havin' wrenchfaces and said nut having an extension folded to .form

a double thickness of metal, said extension being screw-threaded on itsinterior, and its exterior.

8. A nut formed of sheet metal and having a body portion .formed withwrench faces and an extension projecting therefrom, said extension beingof metal folded to form a double thickness of material.

9. A nut formed of sheet metal and having a body portion formed withwrench faces and an extension projecting therefrom, said extension beingof metal folded to form a double thickness of material, and saidextension being screw-threaded on its interior and exterior.

10. A nut formed of sheet metal having wrench faces and a screw-threadedportion of less diameter than the wrench faces, whereby a recess isformed of greater diameter than said screw-threaded portion, and afilling piece in said recess.

11. A nut formed of sheet metal having wrench faces and a screw-threadedportion of less diameter than the wrench faces,

whereby a recess is formed of greater di-. ameter than saidscrew-threaded portion, and a sheet metal filling piece in said recess.-

12. A nut formed of sheet metal having wrench faces and a screw-threadedportion of less diameter than the wrench faces, whereby a recess isformed of greater diameter than said screw-threaded portion, and a sheetmetal. filling piece in said recess,

said sheet metal filling piece having innerand outer flanges.

13. A nut formed of sheet metal having wrench faces and a screw-threadedextension of less diameter than said wrench faces whereby there isformed an annular recess, said extension projecting from the bodyportion and having inner and outer screw- ?threads, and a sheet metalfilling piece in said recess.

14. A sheet metal nut having a body portion having wrench' faces, a fiatportion forming an annular recess with said body portion for thereception of a washer, and a cylindrical portion at right angles to saidflat portion, and a washer in said recess, said recess being open andaccessible so that such washer may be applied to and removed therefrom.

15. A sheet metal structure having a central perforation, a body portionand a flange at right angles to the body portion, a sheet metal fillingpiece resting inside said flange, and a washer resting against saidfilling piece.

16. A sheet metal structure having a body portion, and a cylindricalportion in subform an annular recess, and a washer in said recess havinga greater internal diameter thansaid cylindrical portion, and saidrecess being open and accessible so that such ivasher may be applied toand removed thererom.

In witness whereof, I have hereunto si ed my name in the presence of twosubscri ing witnesses.

HENRY P. KRAFT. Witnesses:

E. V. MYERS, FRED WHITE.

